Final answer:
Mid-ocean ridges are formed at divergent boundaries, seamounts arise from undersea volcanic activity, and trenches form through the process of plate subduction.
Step-by-step explanation:
The seafloor features can be categorized based on their formation. these can be due to various seismic or tectonic activities with a large scale of impact Mid-ocean ridges are formed by well-defined rifts located at divergent boundaries, where the seafloor spreads apart. Seamounts are formed due to submarine volcanic eruptions; these are undersea mountains formed by volcanic activity. Trenches result from downwarping of an oceanic plate as it plunges beneath another plate, a process known as subduction.
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